Omega speakers

I recently switched from a pair of B&W monitors to single driver speakers (Omega Super 3R). I love the sound of it, especially the midrange. But the best thing was when my girlfriend said to me, "That sounds a lot better than your other speakers". I asked her how and she said that it sounded more life-like. This is coming from someone who thinks her mini ipod is the end-all-be-all.

Anybody using a subwoofer with these little speakers? If so, which one?

Thanks.

Doc